Little Tom admitted ____ in the shop, ____ that he wouldn't do that in future.[ ]

A. to have stolen; promising

B. stealing; promised

C. to stealing; promised

D. having stolen; promising

柴油机润滑油系统是由油底壳、机油泵、滤清器、机油冷却器和安全阀、（）及辅助管线组成。